Lucy Hale's alter ego screams for help when the person dressing in black approaches the stall she's in, while Spencer is worried because someone was in her house while her family was sleeping.

Some scenes from the first episode of "Pretty Little Liars" season 3 have been shared ahead of the show's return. Teasing fans with another thrilling moment, one of the new clips features Aria who feels threatened when someone dressing in a black ensemble enters the same bathroom she's in. She screams for help when the mysterious figure walks on to the stall door.

In another sneak peek, Spencer shares to Hanna that she's worried about someone who got into her house while her family was sound asleep. There's additionally a snippet which sees all four Liars talking about how they spent their summer, and another video which sees Hanna visiting Mona in the psychiatric ward.

Titled "It Happened 'That Night' ", the first episode of the show's season 3 will follow the girls as they find themselves back on the defensive when a shocking event rocks Rosewood while the second anniversary of Alison's disappearance approaches. It will air Tuesday, June 5 at 8/7c on ABC Family.

Shay Mitchell recently said the "A" reveal and Maya's death change her character, Emily. " 'A' has done other things before that have been quite serious, but now you've killed somebody who's extremely close to her [Emily]. Another person. For Emily, it's no more 'Mrs. Nice Emily,' it's not going to fly," she explained. "You took it way too far. Emily is now coming back into season three with a vengeance."